1. Data Links
import psycopg2
conn = psycopg2.connect(user,host,port,database,password)
cur = conn.cursor()
2. If you do not know the field names in the data table, you can get the field names in the table in the following ways
We first need to obtain a pointer
cur.execute('select * from your_table')
print (cur.description) # console can print out all of the field names and field information in the table by this method
3. You can also check the relevant information table in one or a few fields
The same also need to obtain the pointer
cur.execute('select clomn_name1,clomn_name2 from table’)
print (cur.description) # thereby obtain relevant information table, some fields
4. Finally, do not forget to close the database connection yo! ! !
cur.close () # close the first pointer is connected
conn.close () # finally close the database connection